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Pro Tru Street Series Forged Piston for Chevy Big Block, 4.320 in. Bore, 1.270 in. Compression Height, +21cc Dome
InfoVehicle Info Needed
WISECOPART NUMBER: 926-5522A7

Pro Tru Street Series Forged Piston for Chevy Big Block, 4.320 in. Bore, 1.270 in. Compression Height, +21cc Dome

$12199
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Forged Piston
  • Chevy Big Block w/Conventional Open Chamber Heads
  • 4.320 in. Bore
  • 1.270 in. Compression Height
  • +21cc Dome
  • 0.990 in. Floating Wrist Pin Included
  • Slab Side 4032 Forged Aluminum
  • ArmorGlide Coated Skirt
  • Sold Individually

    This Wiseco Pro Tru Street Series piston is forged from 4032 aluminum for Chevy Big Block engines with Conventional Open Chamber cylinder heads. It has a 4.320 in. bore and a 1.270 in. compression height with a +21cc dome. Pro Tru Street pistons are intended for street and strip engine rebuilds.

    Wiseco 5522A7 Piston Features:

    • Made for Chevy Big Block engines with Conventional Open Chamber cylinder heads
    • 4.320 in. bore diameter with a 1.270 in. compression height
    • +21cc dome volume
    • Sized for a 4.250 in. stroke and 6.385 in. connecting rod length
    • Forged from 4032 aluminum alloy with a slab side forging design
    • ArmorGlide skirt coating for reduced friction, scuff resistance and quieter operation
    • 0.990 in. 5115 Steel floating wrist pin included
    • Piston rings sold separately; ring grooves accept 0.0625 in. top, 0.0625 in. second and 0.1875 in. oil rings
    • As-forged dome with crown features and oil drain backs
    • Spirolox wrist pin retainers included
    • Sold individually
    • Part TypePiston
    BrandWISECO
    Package Height4.2
    Package Width4.8
    Package Length4.8
    Weight2.3 PG
    Part CategoryPerformance Parts
    Compression Height1.270 in.
    Piston Head TypeDome
    Wrist Pin StyleFloating
    QuantitySold Individually
    Oil Ring Thickness0.1875 in.
    Rod Length (In)6.385 in.
    Piston Head Volume+21cc
    Piston StyleSlab Side
    Piston Pin Outside Diameter0.990 in.
    Second Compression Ring Thickness0.0625 in.
    Top Compression Ring Thickness0.0625 in.
    Piston Material4032 Aluminum
    Cylinder Bore Diameter4.320 in.
    Part FitmentUniversal
    Wrist Pin IncludedYes
    Piston Pin Material5115 Steel
    Vendor Part Number5522A7
    Package Qty1
    Package TypeEA
    Some parts are not legal for use in California or other states with similar laws / regulations
    p65 warning